Quoin



(No Model.)

' M. G. BARRY.

QUOIN. No. 297,102. Patented Apr. 22, 1884."

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MICHAEL c. BARRY, OF sALEM,"MAssAcHUsErTs.

QUOIN.

SPECIFICATION forming part of Letters Patent No. 297,102, dated April22, 1884.

Application filed March 7, 1883. No model.)

f0 6055 whom it may concern:

Be it known that I, MICHAEL O. BARRY, of Salem, in the county of Essex,State of Massachusetts, have invented a certain new and usefulImprovement in Qu'oins, of which the following is a descriptionsufficiently full, clear, and exact to enable any person skilled in theart or science to which said invention appertains to make and use thesame, reference being had to the accompanying drawings, forming a partof this specification, in which Figure 1 is a side view in perspective;Fig. 2, an end view in perspective; Fig. 3, a top View of the keydetached, and Fig. 4 a vertical transverse section of the key.

Like letters of reference indicate corresponding parts in the differentfigures of the drawings.

My invention relates to that class of quoins which are employed byprinters in looking up the forms or securing the type in the chase; andit consists in a novel construction and arrangement of the parts, ashereinafter fully set forth and claimed, by which a more effectivedevice of this character is produced than is now in ordinary use.

The nature and operation of the improvement will be readily understoodby all conversant with such matters from the following explanation, itsextreme simplicity rendering an elaborate description unnecessary.

In the drawings, A A represent the body of the quoin, and B the key. Thebody consists of two sections or side pieces, which are of equal lengthand height, and widest at their forward ends, m, their outer faces oredges, d, being straight or at right angles to their ends, and theirinner faces or edges, a, inclined laterally to the outer faces, as shownin Figs. 1 and 2. The key B is of the same length and height of the sidepieces, and is provided with a dovetail tongue, f, on either side, thetongues being fitted "to work in corresponding longitudinal grooves, i,on the inner faces, a. A recess, 0, is formed on both the upper andlower sides of the key, near its head or outer end, each of saidrecesses having a bed, r, inclined at an angle of about thirty degreesto the plane of the key, and an inclined shoulder, z, reaching from thebottom of the recess to the top of the key, the shoulder standing at anangle of about seventy-five degrees to the bed 1'. When the key is fullyinserted between the side pieces, as shown in Fig. 1, the coin is ofequal width throughout, the wide ends on of the side pieces compensatingfor the narrow end or point g of the key, and vice versa.

In the use of my improvement, the pieces A are placed side by sidebetween the chase and type, and the point of the key B insertedbetonguesfin the groovesi, a rule and other suit able piece of furniturebeing used, as with ordinary quoins. The end of the shooting'stick isthen placed on the bed r, said stick being held at an incline to thequoin or at a right angle to said bed, and the key driven in or forward,causing the side pieces, A, to expand or be forced apart and the formlocked up in a manner which will be readily obvious witha more explicitdescription. In unlocking the form, the end of the shooting-stick isplaced against the shoulder z and the key driven back to any desiredextent.

It will be obvious that by dovetailing the key and sides together, asdescribed, the key is not only prevented from riding or escaping frombetween the chase and type as it is driven in, but also from becomingdetached from the side pieces when started back, unless it isentirelywithdrawn therefrom, the dovetails holding the parts togetherand keeping the key in position for ready use, which would not be thecase were they not connected, or if connected by a plain tongue andgroove, this feature being a valuable one, as it is frequently necessaryto start the quoins back slightly without entirely unlocking the forms,and in so doingit is desirable to leave them so as to be used withoutadjustment.

By having a recess, 0, on both the upper proper position for use withthe shooting-stick without turning the quoin over, and prevents theshooting-stick from injuring the end of the key.

Having thus explained my invention, what I claim isers quoin composed oftwo side blocks tapered longitudinally on one side, and provided withdovetail grooves on their tapered sides, and a central wedge-shapedblock or key provided on its sides with dovetail tongues As a newarticle of manufacture, a printtween the narrow or rear ends, as, withthe and lower sides of the key, it is always in IOO adapted to fit thedovetail grooves of the side locking the form, the said side blocks andkey blocks, and on its upper face with a. recess being of uniformthickness, substantially as having an incline sloping upward toward itsdescribed.

narrow end'for the bearing of the shooting- MICHAEL O. BARRY. 5 stickwhen locking the form, and a more ab- \Vitnesses:

rupt incline or shoulder toward thelarger end GEORGE A. BATES,

PHILIP A. HARTIGAN.

for the bearing of the shooting-stick when 1111-

